Question

Complete the table given below. State Yes/No based on the results obtained by

following processes on food items given in the table below.

(5)



Food items

Gives blue-black

colour when iodine

solution is added.

Gives purple colour

when two drops of

copper sulphate

solution and 10

drops of caustic

soda is added to it.

Oil stains are seen

when rubbed on

paper

Raw potato Yes

Dried coconut

Peanuts

Milk

Gram flour

Boiled rice​

Answer 1

Explanation:

Effects of Force

A force acting on an object causes the object to change its shape or size, to start moving, to stop moving, to accelerate or decelerate. When there’s the interaction between two objects they exert a force on each other, these exerted forces are equal in size but opposite in direction. When an object has several forces acting on it, the effects of force is same as one force acting on the object in a certain direction and this overall force is called the ‘resultant force’. The resultant force is essential to change the velocity of an object.

If the resultant force is zero the forces on the object are balanced.

If the resultant force acting on the object is ‘zero’ then: the object will remain stationary. In such a case the object will move at a steady speed in a straight line.

If the resultant force acting on the object isn’t zero then: the object will either accelerate or decelerate.